Measurement of thermal expansion and thermo-optic coefficients in LiNbO3 and KTiOPO4 crystals using dual-interferometric techniques

Felice Pignatiello; Maurizio De Rosa; Pietro Ferraro; Simonetta Grilli; Sergio De Nicola; Ady Arie; Paolo De Natale

doi:10.1117/12.695504

Measurement of thermal expansion and thermo-optic coefficients in LiNbO₃ and KTiOPO₄ crystals using dual-interferometric techniques

Felice Pignatiello, Maurizio De Rosa, Pietro Ferraro, Simonetta Grilli, Sergio De Nicola, Ady Arie, Paolo De Natale

School of Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We describe a dual-interferometric setup for simultaneous and independent measurement of the thermal expansion coefficient and thermo-optic coefficients in ferroelectric crystals (LiNbO₃ and KTiOPO₄). The crystal temperature varies from room temperature up to 200°C by an actively stabilized oven. The thermal expansion coefficient is determined using a moiré interferometer and monitoring, as a function of the temperature, the period of a grating written on one side of the crystal sample. The thermo-optic coefficients of the ordinary and extraordinary axes of LiNbO ₃ crystal are estimated by measuring the optical path variation measured using a Mach-Zehnder interferometer.

Original language	English
Title of host publication	Speckle06
Subtitle of host publication	Speckles, From Grains to Flowers
DOIs	https://doi.org/10.1117/12.695504
State	Published - 2006
Event	Speckle06: Speckles, From Grains to Flowers - Nimes, France Duration: 13 Sep 2006 → 15 Sep 2006

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	6341
ISSN (Print)	0277-786X

Conference

Conference	Speckle06: Speckles, From Grains to Flowers
Country/Territory	France
City	Nimes
Period	13/09/06 → 15/09/06

Keywords

Ferroelectric crystal
Moiré interferometer
Thermal expansion coefficient
Thermo-optic coefficient

Access to Document

10.1117/12.695504

Cite this

Pignatiello, F., De Rosa, M., Ferraro, P., Grilli, S., De Nicola, S., Arie, A., & De Natale, P. (2006). Measurement of thermal expansion and thermo-optic coefficients in LiNbO₃ and KTiOPO₄ crystals using dual-interferometric techniques. In Speckle06: Speckles, From Grains to Flowers [63412H] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6341). https://doi.org/10.1117/12.695504

Pignatiello, Felice ; De Rosa, Maurizio ; Ferraro, Pietro ; Grilli, Simonetta ; De Nicola, Sergio ; Arie, Ady ; De Natale, Paolo. / Measurement of thermal expansion and thermo-optic coefficients in LiNbO₃ and KTiOPO₄ crystals using dual-interferometric techniques. Speckle06: Speckles, From Grains to Flowers. 2006. (Proceedings of SPIE - The International Society for Optical Engineering).

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title = "Measurement of thermal expansion and thermo-optic coefficients in LiNbO3 and KTiOPO4 crystals using dual-interferometric techniques",

abstract = "We describe a dual-interferometric setup for simultaneous and independent measurement of the thermal expansion coefficient and thermo-optic coefficients in ferroelectric crystals (LiNbO3 and KTiOPO4). The crystal temperature varies from room temperature up to 200°C by an actively stabilized oven. The thermal expansion coefficient is determined using a moir{\'e} interferometer and monitoring, as a function of the temperature, the period of a grating written on one side of the crystal sample. The thermo-optic coefficients of the ordinary and extraordinary axes of LiNbO 3 crystal are estimated by measuring the optical path variation measured using a Mach-Zehnder interferometer.",

keywords = "Ferroelectric crystal, Moir{\'e} interferometer, Thermal expansion coefficient, Thermo-optic coefficient",

author = "Felice Pignatiello and {De Rosa}, Maurizio and Pietro Ferraro and Simonetta Grilli and {De Nicola}, Sergio and Ady Arie and {De Natale}, Paolo",

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series = "Proceedings of SPIE - The International Society for Optical Engineering",

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Pignatiello, F, De Rosa, M, Ferraro, P, Grilli, S, De Nicola, S, Arie, A & De Natale, P 2006, Measurement of thermal expansion and thermo-optic coefficients in LiNbO₃ and KTiOPO₄ crystals using dual-interferometric techniques. in Speckle06: Speckles, From Grains to Flowers., 63412H, Proceedings of SPIE - The International Society for Optical Engineering, vol. 6341, Speckle06: Speckles, From Grains to Flowers, Nimes, France, 13/09/06. https://doi.org/10.1117/12.695504

Measurement of thermal expansion and thermo-optic coefficients in LiNbO₃ and KTiOPO₄ crystals using dual-interferometric techniques. / Pignatiello, Felice; De Rosa, Maurizio; Ferraro, Pietro; Grilli, Simonetta; De Nicola, Sergio; Arie, Ady; De Natale, Paolo.

Speckle06: Speckles, From Grains to Flowers. 2006. 63412H (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6341).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - De Nicola, Sergio

AU - Arie, Ady

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AB - We describe a dual-interferometric setup for simultaneous and independent measurement of the thermal expansion coefficient and thermo-optic coefficients in ferroelectric crystals (LiNbO3 and KTiOPO4). The crystal temperature varies from room temperature up to 200°C by an actively stabilized oven. The thermal expansion coefficient is determined using a moiré interferometer and monitoring, as a function of the temperature, the period of a grating written on one side of the crystal sample. The thermo-optic coefficients of the ordinary and extraordinary axes of LiNbO 3 crystal are estimated by measuring the optical path variation measured using a Mach-Zehnder interferometer.

KW - Ferroelectric crystal

KW - Moiré interferometer

KW - Thermal expansion coefficient

KW - Thermo-optic coefficient

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Pignatiello F, De Rosa M, Ferraro P, Grilli S, De Nicola S, Arie A et al. Measurement of thermal expansion and thermo-optic coefficients in LiNbO₃ and KTiOPO₄ crystals using dual-interferometric techniques. In Speckle06: Speckles, From Grains to Flowers. 2006. 63412H. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.695504